[تم الحل] WP + Divi

Background of the issue:
I am using WP with the Divi theme on the site الرابط المخفي. I need help to translate the display of categories of portfolio items. In attached screenshot category "ALL" is English but should be there in Catalan language.

Symptoms:
I went to WPML strings but can't find this one.

Questions:
How can I translate the display of categories of portfolio items using WPML?